Hot-water heater.



W. HAWKS. `HOT WATER HEATER. I

APPLIUATION FILED MAR. 29. 1907.

Patented June v15, 1909.

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v l l l UNITED sTATEs PATENTOFIGE.

WILLIAM HAWKS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF-TO D. HEWITT CHISHOLM,

. OF CHICAGO, ILLINOIS.

HOT-WATER EEATER.

Specication of Letters Patent.

Patented June 15, 1999. l

' To all whom 'it may concern: L

Be it known that I, WILLIAM HAwKs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Im rovements in Hot-Water Heaters, of which the followin is a specification.

' My invention re ates to improvements in hot water heaters, and more particularly to heaters of the kitchen boiler type.

One of the objects of my invention is to provide a heater wherein the direct heat from the burner acts upon: a built-u i structure involving a series of heating dis units arranged to cause the heat to pass through a tortuous passage.

A further object of my invention is to provide a construction in which-the hot water receptacle is jacketed by the escape flue for the heat.

Another object of my invention is to provide improved heating disk units. And further my invention has for its object to provide a generally improved, simple and efli cient heating construction.

In the drawing; `i'igure 1 is a vertical cross section of a structure embodying my invention; l-fig. 2 is a perspective View of one of -the heatlng disk units, and; ig'. 3 is a modiiied structure embodying features of my in. vention.

Throughout the drawing like numerals of reference refer always to like parts.

In said drawing 5 indicates a Vbase of ordi nary construction supporting a vertical, open-bottomed combustion chamber 6, provided, proferabljf, with a side door 7, and having arranged therein the burner S, of any suitable const-methai and adapted for the burning of any suitable luid.

In the construction shown burner 8 is a gas burner, and 9 is avpilot for lighting thc same. v

Vertically above the combustion chamber -1 6 is arranged a hot water reservoir or boiler 1l), the 'bottom'of such boiler 11, forming the crown sheet of the 'combustion chamber 6.

Surrounding the boiler 10 is a jacket 12, spaced a art from the boiler roper to form an annu ar ilue 13, complete y surrounding the top and sides of the boiler, and in open communication with the combustion cham-. ber, such jacket 12 having referably aheat insulating lining 14 of suitable material such as asbestos. U Y

In the 'construction shown in Fig. 1 the shell ofthe combustion cham-ber is a continuation of the jacket shell 12, the opening between the flue 13 and the chamber 6 being the annular space 15. The boiler 10 is positioned within the casing partly by its piping connections, to be described, and partly by the bolts 16 having thereon appropriate spacing sleeves.

In the construction shown in Fig. 3 the combustion chamber casing 6 is connected to the boiler 10', and the jacket 12 closed at its lower end a little below the level of crown sheet 11', opening to the combustion chamber through registering apertures 15 and 15" made through the Wall of the combustion y chamber and the boiler 10 respectively.

Obviously the construction shown in liig. 1 gives the greater amount of space within the combustlon chamber so that large burners and heating disks may be used, and I, therefore, show it as a preferred form.

In the s ace between the bottom 1-1 of the boiler an the burner 8, are arranged'the .primary heating drums or disks, the construction shown comprising a series of disks 17 superposed one upon another and connected together for water circulation. Each disk is preferably a circular structure having a hollow hub 18 and several hollow water arms 19 radiating therefrom and communieating therewith, such arms being separated lylheat passages 20 extending through the i 1s r.

21 indicates a continuous band or rim forming the periphery of the disk, to constitute the peripheral wall of the water arms 19 and to peripherally close the heat passages to form lower flangeshas indicated at 22 in Fig. 1. In cross sectional area the water arms 19 of the disks preferably taper somewhat from the hub to the periphery, and in plan .they taper from rim to hub. The hub portions of the several disks of the stack are all interconnected by hollo'w bushings 23 andpreferably the disks are stacked one upon the other in such relation that the roun heat passages 20 are sta gering, so that the path of heat circulation t rough the opemng 2O is tortuous.

24 indicates thesupply pipe for .the staizky at its upper end connected to the boiler 10 adjacent its bottom, and thence assing downward into the combustion chamoer and up through the center of burner 8 into the hub of the lowermost disk 17.

25 indicates the outlet water pipe of the stack passing u through the center of boiler 10 to a point a jacent lts top.

26 and 27 indicate the usual main supply and discharge pipes for the boiler 10, and 28 indicates the heat outlet Hue from the top of jacket 12, controlled by a hand damper 29.

,N ow it will be a parent that when the burner 8 is lighted the hot gases of combustion therefrom pass upward throfgh the tortuous passage afforded by the heat openings 20 through the superposed heating dlsks 17, peripheral escape of the\ gases being. prevented by the wall 21, so that heat is not wasted by radiation t'o and through the casing Wal-l 6. In consequence the maximum proportion of the heat is absorbed by, and communicated to the water within, the hollow disk 17 so that the temperature of such water is quickly raised. As a result the hot water, seeking to escape through the circulation pipe 25, from the arms 19, belches, in sudden impulses, from such arms through the communicating bushings 23 and the pipe 25, linto the boiler, fresh water being supplied to the bottommost heater disk throughthe cir-` culation feed pipe 24. This belching action occasioned 'by this construction I have found very eiiicacious in keeping the disks free ,from deposits, which tend'to clog them up and destroy btheir usefulness, as the agitation ac companying the delivery of volumes of water from arms 19 is quiteviolent.

- The heat escaping through the uppermost gtheboiler proper, imparting additional heat or tending to conserve the heat of the boiler, according to its temperature, and eventually finds its Way out through the lue 28. When the water 1n the boiler has been properly heated it will be apparent that the urner 8 may be turned out and 'then by in insulating the boiler against radiationV of asses into the annular lue 13 surthe heat from the water therein.. This arrangement l have found to be very effective, and a boiler full of hot water may be caused to retain its heat for considerable periods o f time.

While l have herein described in some detail a specific embodiment of my invention, which l deem to be new, it will be apparent that many changes may be made in the construction without departure from the spirit and scope of my invention.

Having thus described my invention, what l claim and desire to secureby Letters Patent, oi the United States, is:

1. ln a water heater, a boiler, a series of like superposed hollow disks each having a smooth top and heatl passages therethrough connected with said boiler and provided with a continuous band or rim formin the periphery of the disk, whereby a vertica ly, substantially inclosed continuous stack is provided within which the heat is confined, and a source ol' heat below the disks.

2. ln a water heater, a boiler, a hot-water inlet pipe extending through the bottom to a point` near thetop of the boiler, a series of superposed smoothvtop disks or drumsLeach.

hollow water 'a'.rns". racliz'i.tir.gl therefrom and communicatingtherewith, said arms being separated by heat passages extending through the disk, and a continuous peripheral rim exten ding around thc`outer`surfaces of the water arms, said disks being arranged t0 provide tortuous heat passages therethrough, and a heating means below said disk.

3. ln a water heater, the combination of a boiler, a jacket surrounding and supporting said boiler and extending therebelow to form the combustion chamber, a series of perfo rated, peripherally flanged, superposed smooth top hollow disks arranged with said perforations out of register whereby there is formed Within said dlsks an inclosed stack, provided with tortuous heat passages therethrough within which the heat is substantially confined, and a source of heat within said combustion chamber.

ln testimony whereof I hereunto set my 

